Method and device for operating breathing apparatus

ABSTRACT

The invention relates to a device for operating a breathing apparatus with a touch-sensitive graphical display and just one other mechanical operating element, wherein the basic treatment can be started by pressing down the mechanical operating element, and additional adjustments are made using the touch-sensitive graphical display.

BACKGROUND OF THE INVENTION Field of the Invention

The invention relates to an operating system for a breathing apparatus.

Discussion of Background Information

Breathing apparatuses usually have separate operating and information ordisplay elements. Operating elements are in the form of switches orrotary knobs, for example. The adjustments made using the operatingelements can then be read on separate displays. This results in complexoperation for the user with menu guidance which is not very intuitive.

The object of the present invention is therefore to provide auser-friendly and intuitively operable operating system for a breathingapparatus. In particular, the user is supposed to be able to makeimportant adjustments quickly without having to deeply navigate throughnested menu structures.

The object is achieved by means of the features of the main claim.

SUMMARY OF THE INVENTION

Operating device for a breathing apparatus comprising:

a touch-sensitive graphical display which at least occasionallyrepresents the range of values for a breathing parameter and numericallydisplays at least individual values, a memory for breathing-parametervalues, at least one data point associated with the range of values,

-   -   at least one position on the touch-sensitive graphical display        which is associated with the data point using switching logic,    -   switching logic which, when the position on the touch-sensitive        graphical display which is associated with the data point using        switching logic is touched,    -   causes at least one numerical value associated with the data        point and/or a confirmation field for the numerical value to be        displayed,    -   switching logic which, when the numerical value or the        confirmation field is touched, applies this numerical value to        the associated respiratory gas parameter and writes this        numerical value, with the associated respiratory gas parameter,        to the memory.

Beside the touch-sensitive display, only one further operating elementis provided according to the invention. This operating element can bemechanically operated and therefore differs from the touch surfaces onthe display. According to the invention, the breathing apparatus isswitched on and off via the operating element, with the result that abasic therapy appropriate for the patient can be activated using onlyone button. For this purpose, the operating element is connected to theblower motor using switching logic and activates this motor and thememory in order to retrieve and use stored therapy data such as pressurevalues. In addition, individual values such as pressure values can beadapted using the enter keys of the touch-sensitive display. However,operation using the enter keys of the touchscreen is not necessary tostart the therapy according to the invention.

Operating device for a breathing apparatus having a touch-sensitivegraphical display and only one further mechanical operating element, inwhich case the basic therapy can be started by pressing down themechanical operating element and additional adjustments are made usingthe touch-sensitive graphical display.

The invention also provides for the finger position to already bedetected when approaching the screen. The operating logic would then besimilar to that described above, but touching of the screen would thenalready be the confirmation of the adjusted value, for example.

The operating device for a breathing apparatus, preferably for a CPAP,APAP, bi-level or home therapy breathing apparatus, is equipped with adisplay for displaying information and for displaying operating fieldsfor the user and with at least one touch-sensitive input field.

BRIEF DESCRIPTION OF THE DRAWINGS

Exemplary embodiments of the invention are schematically illustrated inthe drawings, in which:

FIG. 1 shows a perspective illustration of a breathing apparatus with abreathing mask and a respiratory gas hose,

FIG. 2 shows a display of the operating and information system,

FIG. 3 shows a display for illustrating a submenu,

FIG. 4 shows an operating field in the form of a number line,

FIG. 5 shows an operating field in the form of a graph,

FIG. 6 shows an illustration similar to FIG. 5 for illustrating afurther operating state,

FIG. 7 a) shows a further operating field in the form of a graph, b)shows an adjustment of a pressure wave form, c) shows a variant of b),

FIG. 8 shows a schematic illustration of a graphical adjustment aid fora ramp gradient,

FIG. 9 shows a schematic illustration of a graphical adjustment aid forthe trigger sensitivity,

FIG. 10 shows a graphical adjustment aid for at least one pressure,

FIG. 11 shows an additional illustration for FIG. 7,

FIG. 12 shows an image for illustrating a ratio of inspiratory time andthe total breathing time,

FIG. 13 shows a schematic illustration of a circular operating element,

FIG. 14 shows an alternative embodiment, and

FIG. 15 shows a mechanical operating element.

DETAILED DESCRIPTION OF EMBODIMENTS

FIG. 1 shows the fundamental structure of a breathing device. Anoperating element (2) and an operating and information system (3)consisting of a display (13) and a touch-sensitive input unit (15) withat least one operating field (14) are arranged in the region of anapparatus housing (1) of the breathing apparatus (20) having arespiratory gas source in the interior of the apparatus. A connectinghose (5) is connected via a coupling (4). An additionalpressure-measuring hose (6) which can be connected to the apparatushousing (1) via a pressure inlet connection piece (7) can run along theconnecting hose (5). In order to make it possible to transmit data, theapparatus housing (1) has at least one interface (8). A humidifier (30)can also be adapted.

An exhalation element (9) is arranged in the region of an extent of theconnecting hose (5) which faces away from the apparatus housing (1). Anexhalation valve may likewise be used.

FIG. 1 also shows a patient interface which is in the form of arespiratory mask (10) and is implemented as a nasal mask. Fixing in theregion of a patient's head can be carried out using a head cover (11).In the region of its extent facing the connecting hose (5), the patientinterface (10) has a coupling element (12).

Data, for example dead space volume, can be input and/or output via theinterface (8). The interfaces may be wired, in the form of an infraredinterface, in the form of a Bluetooth interface or in the form of a USB.A card slot is preferably also provided. The interface (8) may also bein the form of a LAN interface or another interface for connection tothe Internet. An oxygen connection valve can be adapted for thebreathing device in the region of an apparatus housing. It isconceivable for the respiratory gas to additionally be enriched withoxygen in order to improve patient care.

Data which are extraneous to the therapy can also be loaded into thebreathing apparatus according to the invention via the interface (8)—forexample in the form of a card slot or USB—and can be executed by saidapparatus. The idea is thus to display photos or videos, for example, inthe region of the display by means of storage media via the interface(8). If external storage media are detected by the apparatus, the usermust confirm an enquiry in the operating field, whereupon the data areeither stored in the region of the breathing apparatus or are executed.

The breathing apparatus (20) according to the invention is designed insuch a manner that it can be connected to a patient via a hose and apatient interface in order to provide ventilation. It comprises a sourcefor respiratory gas, which is in the form of an electric motor with animpeller for example, and a device for determining pressure and/or flowand/or volume of the respiratory gas as well as a control unit (19)which is designed in such a manner that it determines a respiratory gaspressure for each breathing cycle on the basis of a predetermined valuefor the patient and/or on the basis of measurement signals for thepressure and/or flow and/or volume parameters and regulates therespiratory gas source in such a manner that the respiratory gaspressure is produced.

The control unit (19) is also designed in such a manner that itdetermines the instantaneous pressure and/or flow and/or volume ofrespiratory gas and displays the instantaneous value using the operatingand information system (3) to the control unit. The control unit (19) isalso designed in such a manner that it determines trend changes in itscalculations over time based on one or more parameters, the trendchanges being able to be displayed on the display.

The control unit (19) also compares those parameter values which havebeen specified by a user, for example upper and lower pressure limits ora maximum tolerable number of apnea per unit time or a maximum tolerableleakage, with the instantaneous values and generates an item of userinformation relating to deviations from the specification. The userinformation is preferably graphically visualized via the operating andinformation system (3).

Apnea and hypopnea are therefore identified from the measuredrespiratory flow by means of a decrease in the breathing (time) volumefor a period of at least 10 s. Snoring is additionally identified viapressure and flow fluctuations, and flattening is identified via theinspiratory flow contour. Indices are calculated therefrom for eachsufficiently long nighttime therapy, namely: AHI (=number ofapnea+hypopnea for each artifact-free therapy duration), RDI (=number ofall respiratory events for each artifact-free therapy duration),proportion of breaths with flattening, proportion of breaths withsnoring. Data which allow deductions to be made about the usage behavioror the usage duration of the apparatus by the patient are preferablyalso determined. These data are determined and stored on a daily orweekly or monthly basis. If necessary, the usage data are retrieved andtransmitted, possibly together with an apparatus identifier, via anInternet connection or a mobile radio connection.

FIG. 2 shows the operating and information system (3) for a breathingapparatus (20) with a lit or backlit display (13) for displayingoperating fields (14) or information for the user and with atouch-sensitive input unit (15) in spatial proximity to the displayedoperating field (14). In a specific embodiment, it is a man-machineinterface in the form of a so-called touchscreen, in which case a personskilled in the art knows different types which are all possible as partof the operating and information system (3) according to the invention.

At least one first operating field (14 a) and one second operating field(14 b) are displayed in the region of the display. The control unit (19)is configured to display the menu on the display (13).

A processing unit (18) which is coupled to the display (13) and to thetouch-sensitive input unit (15) is configured to detect operation of theoperating field (14) via the input unit (15) and, on the basis thereof,to control a function of the menu via the control unit (19). A menuassigned to an operating field (14 b, 14 c, 14 d . . . ) is preferablydisplayed on the display (13) in a manner spatially adjacent to theoperating field or at the same position of the operating field.Simultaneous or time-delayed operation of further operating fields (14b, 14 c, 14 d . . . ) via the input unit (15) can likewise be detectedvia the processing unit (18). The processing unit then causes thecontrol unit (19) to call up the menu assigned to the selected operatingfield in the first level (=submenu). A submenu assigned to an operatingfield (14 b, 14 c, 14 d . . . ) is preferably displayed on the display(13) in a manner spatially adjacent to the operating field or to themenu or at the same position of the operating field/menu.

A submenu is displayed by the control unit (19) via the display (13).The submenu is preferably displayed substantially at the same positionas the menu from which the submenu emerges. Further operating fields(14) or information can now be displayed in the submenu. Navigation in aplurality of submenus is fundamentally provided; however, the branch ispreferably no deeper than two menu levels. In order to return to themenu again from a submenu, an operating field (14) is always provided atthe same position, the actuation of which field causes the control unitto display the menu of the next higher hierarchical level on the display(13).

The currently set ventilation pressure in mbar, with an associatedoperating field (14 e), is displayed in the lower right-hand corner. Aninformation field with an associated operating field (14 a) is displayedin the upper right-hand corner.

If, for example, the ventilation pressure—as actuatable adjustmentfunctions—is intended to be changed, the user simply touches thecorresponding field of the display in which the information relating tothe instantaneous pressure is displayed, here (14 e). The control unitthen causes an operating field (14 e 1) to be displayed.

In the simplest case, two operating fields in the form of + and −symbols (14 f 2, 14 f 3) are visualized above and below or to the rightand left of the selected actuatable adjustment function. Actuation ofthe operating fields is detected by the processing unit (18) which thencauses the control unit (19) to change the value of the actuatableadjustment functions in accordance with the input and to visualize it inthe region of the display. The changed parameter is displayed by thecontrol unit in the corresponding field of the display and is set andused as the new parameter at the same time or only after user selectionby means of a control signal to the blower of the breathing apparatus.The set value and the actual value are preferably initially visualizedand, after the actual value corresponds to the set value, only theactual value is displayed.

The parameters which have been adjusted in this manner aresimultaneously written by the control unit (19) to a memory (21) whichis used as a buffer for the parameter values to be currently used. Thememory (21) always stores at least the values input and used last. Ifthe undo function is actuated, the memory (21) always outputs these lastvalues first.

FIG. 4 shows an operating field in the form of a number line or bar.Parameters with a large number of adjustment levels, for exampleventilation pressure, frequency, flow, volume or the backgroundfrequency (for example of 6-40 1/min) may be adjusted there.

In order to adjust a therapy pressure, the entire pressure range ispreferably visualized on the display (13) in the form of a number lineor bar. In addition, the visualized number line is also in the form ofan operating field (14 f). The operating field for the pressure (14 f)is touch-sensitive over the entire visualized adjustment range. The usercan therefore select the desired value by simply touching the desiredpressure range. The detected value is visualized in an additional field(14 f 1). Provided that the detected and visualized value is correct,the user can use this value by touching the field (14 f 1). Fineadjustment with a step width of 0.5 is additionally possible using thesymbols +/− (14 f 2, 14 f 3).

An operating field in the form of a list selection is displayed whenadjusting a large number of options, for example for selecting thelanguage for the user interface or for selecting the adjustmentparameters for ventilation. In this case, the options which can beselected are displayed in written form or in the form of symbols and thedesired option is selected by touching the latter, whereupon the controlunit causes the selection to be implemented by means of a control signalor displays the adjustment range. In FIG. 5, the adjustments arediscernible for the user at a glance. For adjustment, each value can beselected directly by touching.

An operating field can then be visualized in the form of a number lineor bar, like in FIG. 4. There, parameters can be adjusted by touchingthe desired range.

The invention provides for an active operating field (14) to behighlighted by means of a more intensive color, as a result of which theuser is made aware of the adjustment function, and operating fieldswhich are not active are visualized in a faint color. The fainter colormakes the user aware of the fact that the fields are not active.

FIG. 5a shows an operating field in the form of a graph. Here, theinstantaneous or stored pressure values for the inspiratory pressure(IPAP), the expiratory pressure (EPAP) and the end expiratory pressurelevel (EEPAP) are visualized.

If the user wishes to change one of these pressures, he must touch theline representing the pressure range (14 g, 14 h, 14 i) and must thenmove the pressure range to the desired level by sliding his fingeracross the display. In this case, the selected line moves with themovement and the value is also concomitantly displayed. If the userterminates the touching, this adjusted value is used. In the presentexample, the user has reduced the IPAP (14 g) from 15 mbar to 13 mbar,as illustrated in FIG. 5 b.

The user can likewise adjust the EPAP pressure (14 i) and the EEPAPpressure (14 h).

FIG. 6a likewise shows an operating field in the form of a graph. Here,the instantaneous or stored pressure values for the inspiratory pressure(IPAP), the expiratory pressure (EPAP) and the end expiratory pressurelevel (EEPAP) are visualized.

If the user wishes to change one of these pressures, he must touch theline representing the pressure range (14 g, 14 h, 14 i) and must thenmove the pressure range to the desired level by sliding his fingeracross the display. In this case, the selected line moves with themovement and the value is also concomitantly displayed. If the userterminates the touching, this adjusted value is used. In the presentexample, the user has increased the EEPAP (14 h) from 6 mbar to 7 mbar,as illustrated in FIG. 6 b.

The user can likewise adjust the gradients of the pressure transitionsand the pressure wave form.

FIG. 7a shows an operating field in the form of a graph. Here, theinstantaneous or stored pressure values for the inspiratory pressure(IPAP), the expiratory pressure (EPAP) and the end expiratory pressurelevel (EEPAP) are visualized. The gradients of the pressure transitionsand the pressure wave form are also displayed. The gradient of thepressure transition from the EPAP to the IPAP pressure (14 k) issometimes displayed as a solid line (14 k) and sometimes displayed as adashed, interrupted line. The dashed, interrupted line appears when theuser touches and moves the line (14 k).

If the user wishes to change the gradient of the pressure transitionfrom the EPAP to the IPAP pressure (14 k), he must touch the linerepresenting the gradient (14 k) and then bring it to the desiredgradient by shifting the line (14 k)—preferably in the region of thestart or end points, that is to say close to the EPAP or IPAPpressure—in the horizontal direction using his finger. In this case, theselected line (14 k) concomitantly moves with the movement as aninterrupted line, in which case the opposite anchor point of the lineremains fixed. The selected line appears in dashed form, for example, orin another color during the adjustment process. In addition, the valueof the gradient can be concomitantly displayed. If the user terminatesthe touching, this adjusted value is used and the line is solid again.

FIG. 7b shows how the pressure wave form (14 m) is adjusted. Thepressure wave form (14 m) is an excessive increase in the IPAP pressure(14 g) which can be adjusted by the user. The IPAP pressure is typicallyconstant, here displayed as a solid line (14 g). However, upon userselection, the IPAP pressure can be adjusted in a slightly rising mannerto an increased IPAP pressure and in a slightly falling manner to theIPAP pressure, here displayed as an interrupted line.

If the user wishes to change the pressure wave form (14 m) of the IPAPpressure (14 g), he must touch the line representing the IPAP (14 g) andmust then move it in the vertical direction in order to thus set thedesired wave form. The maximum pressure of the wave form is always setin the region of the touching, and the rising and falling edges followpassively. If the user touches the line (14 g) in the starting region(on the left) and moves it in the vertical direction, the resulting waveform (14 m) will have a steep rise with a pressure maximum at the startand will then fall. If the user touches the line (14 g) in the endregion (on the right) and moves it in the vertical direction, theresulting wave form (14 m) will have a gentle rise with a pressuremaximum at the end and will then fall greatly (see FIG. 7c ).

If the user touches the line (14 g) in the center and moves it in thevertical direction, the resulting wave form (14 m) will have asymmetrical rise and fall, with a pressure maximum in the center.

The following also applies to the statements made with respect to allFigures:

The displayed range of values on the number line is scaled in such amanner that it always includes precisely the range between the currentlypossible minimum and maximum for adjusting the respective parameter. Inthis case, possible presettings or limit values are taken into account.

Alternatively, a universal range of values is always displayed, and thecurrently valid (presettings or limit values) minimum and maximum areindicated, for example by means of additional lines or hatching ofeither the valid range of values or the invalid range of values.

The old value which is currently still active for ventilation until thenew value is confirmed is additionally displayed. This can be effected,for example, by means of an additional line or a colored marking.

Instead of a line highlighted using color, the currently selected valuecan also be marked, for example, by means of an arrow which points tothe scale from above or below, or by coloring a number on the scale.

Two or more values may also be simultaneously adjusted on a scale, forexample the upper and lower pressure limits. In this case, both aredisplayed differently, for example by means of a different color orhatching. The changeover between the adjustment of the one value and theother value is carried out either within the scale, for example theparameter closest to the touching is always adjusted, or it is necessaryto switch back and forth between the two parameters outside the scale,for example by means of activation using the tiles. Alternatively, theidea is also for a sensitive time window for adjusting the second valueto remain after the first value has been adjusted, with the result thatboth values can be successively adjusted without diversions via menus onthe displayed number line.

It is not always just numbers which must be present on the scale. Itcould also be possible to change over between different ranges which aredescribed by words or by a combination of words and numbers, for example“small-medium-large-very large” or “off-slight-normal-strong”, “off-0,1, 2, . . . max”.

While numerical values are adjusted on the number scale, there could bea further optical feedback region separate therefrom. For example, ifthe ramp gradient for the in-ex ramp is adjusted, a trapezium may bedisplayed at a further position on the display as a simplification of apressure profile in which the ramp is displayed in a steeper or flattermanner similar to the selection in the operating field.

Acoustic feedback is also provided. For example, the greater thecurrently selected value in the operating field, the louder a tone or atone sequence and vice versa. Alternatively, colored feedback isprovided, for example a change in the color of the scale or the markingof the instantaneous value if the latter exceeds or undershootsparticular values.

The following parameters can also be displayed using an operating field.Ramp gradients for the inspiration/expiration pressure transition andvice versa, trigger sensitivity, duration for the pressure ramp at thestart of the therapy (soft start), volume of acoustic outputs,brightness of display or additional LEDs/display units, sensitivity oftouchscreen or particular algorithm parts, target volume, targetventilation, patient characteristics such as height, age, weight, BMI orvalues related thereto, humidifier stage, desired values for at leastone temperature or humidity of the respiratory gas, time, date, timezone, duration of a statistics period, size of an item of displayedinformation, target value for compliance in minutes or hours, at leastone subjective mental state of a patient.

Instead of the linear display, the operating field may also be circularor oval and may therefore simulate a dial, for example.

The invention also provides for a virtual and rotatable control knob ora scrolling wheel to be displayed.

The number scale need not be linear and may also be logarithmic, forexample, or may have a higher resolution, similar to a magnifying glass,in the range of the instantaneous value and may be coarser further awayfrom it.

Alternatively, it is also possible to change over between a detaileddisplay of a partial range, for example around the instantaneous value,and a display of the entire range.

In order to satisfy the respective patient, the rate of the pressurerise or flow rise may be stipulated. It is therefore stipulated how longthe pressure rise lasts from the lower pressure level to the upperpressure level. In this case, the time is set in seconds or, for theflow, the gas flow is set in liters per minute. At the start ofinspiration, the respiratory air is administered at a flow lower thanthe set flow, and the gas flow increases to the set value over thecourse of inspiration. These settings have immediate effects on thedelivered tidal volume VT. The characteristics of the pressure increaseor pressure reduction can be adjusted and are preferably effected in theform of a ramp. The pressure increase to the increased pressure levelcan take place with a uniform ramp gradient. The pressure increase orpressure reduction can be carried out with a variable ramp gradient. Thevalue of the increased or reduced pressure level can preferably beadjusted in steps of mbar or fractions of mbar. The ramp gradient forthe pressure rise or pressure drop can be displayed on the display at afurther position in the form of a graph—for example a trapezium as asimplification of the pressure profile—in which the ramp is displayed ina steeper or flatter manner similar to the selection in the operatingfield.

FIG. 8 shows the graphical adjustment aid for the ramp gradient for thetransition from expiratory pressure to inspiratory pressure (marked ingreen). The instantaneous level can be adjusted using a slider/ruler oralternatively with + and −. With its green marking, the ruler isadditionally used not only as an adjustment tool but also as a displayelement. This provides the advantage that inexperienced users are alsodirectly provided with a display of the value during adjustment.

In the example illustrated, it can be seen that the graphical adjustmentaid provides the user with at least double feedback (31, 34), preferablytriple feedback with respect to the adjustment (31, 32, 34). Theoperating device for a breathing apparatus comprises a touch-sensitivegraphical display (3, 13, 14, 15) which at least occasionally representsthe range of values for a breathing parameter (14 a . . . 14 x), herethe ramp gradient (30), and numerically displays (31) at leastindividual values of the ramp gradient. In addition, a memory (21) forthe value of the ramp gradient for at least one data point associatedwith the range of values and at least one position (14 a . . . 14 x) onthe touch-sensitive graphical display which is associated with the datapoint using switching logic are used. Switching logic (18) which, whenthe position on the touch-sensitive graphical display which isassociated with the data point using switching logic is touched, causesat least one numerical value (32) associated with the data point and/ora confirmation field (33) for the numerical value to be displayed andswitching logic (18) which, when the numerical value (32) or theconfirmation field (33) is touched, applies this numerical value to theassociated respiratory gas parameter and writes this numerical value,with the associated respiratory gas parameter, to the memory (21) arealso provided.

The operating field is in the form of a number line or ruler and theentire range of values is visualized on the display (13) in the form ofa number line or bar and the visualized number line is also in the formof an operating field (14 f). The operating field is touch-sensitiveover the entire visualized adjustment range and the desired value can beselected by only touching the desired range.

Finger pressure or touching inside the ruler is evaluated with respectto its position in such a manner that it is not necessary to strikeprecisely one of the numbers 1, 2, 3, but rather the finger pressure isassigned to the closest number. The detected value (32) is visualized inan additional field (14 f 1). The detected value can additionally beadjusted using the symbols +/− (14 f 2, 14 f 3).

Not only individual values of the ramp gradient are preferablynumerically displayed (31), but the selected value of the ramp gradientis also numerically displayed (33) and the selected ramp gradient (34)is also graphically visualized.

Alternatively or additionally, as stated with respect to FIG. 7, theramp can also be adjusted from the inspiratory to the expiratorypressure.

In a similar manner to FIG. 8, FIG. 9 shows the adjustment of thetrigger sensitivity (40). The threshold value (41) is schematicallyillustrated in the figure as a green line. In comparison with FIG. 7, itis seen that values which do not represent a numerical value can also beselected in the slider/ruler, in this case “A” for the auto level. Theoperating device for a breathing apparatus comprises a touch-sensitivegraphical display (3, 13, 14, 15), which at least occasionallyrepresents the range of values for a breathing parameter (14 a . . . 14x), here the trigger sensitivity (40), and numerically displays (42) atleast individual values of the trigger sensitivity, and a memory (21)for the value of the trigger sensitivity of at least one data pointassociated with the range of values. At least one position (14 a . . .14 x) on the touch-sensitive graphical display which is associated withthe data point using switching logic and switching logic (18) which,when the position on the touch-sensitive graphical display which isassociated with the data point using switching logic is touched, causesat least one numerical value (32) associated with the data point and/ora confirmation field (33) for the numerical value to be displayed arelikewise used. Switching logic (18) which, when the numerical value (32)or the confirmation field (33) is touched, applies this numerical valueto the associated respiratory gas parameter and writes this numericalvalue, with the associated respiratory gas parameter, to the memory (21)is likewise provided.

The operating field is in the form of a number line or ruler and theentire range of values is visualized on the display (13) in the form ofa number line or bar and the visualized number line is also in the formof an operating field (14 f). The operating field is touch-sensitiveover the entire visualized adjustment range and the desired value can beselected by only touching the desired range. Finger pressure or touchinginside the ruler is evaluated with respect to its position in such amanner that it is not necessary to strike precisely one of the numbers1, 2, 3, but rather the finger pressure is assigned to the closestnumber. The detected value (32) is visualized in an additional field (14f 1).

The detected value can be additionally adjusted using the symbols +/−(14 f 2, 14 f 3). Not only individual values of the trigger sensitivityare preferably numerically displayed (42), but the selected value of thetrigger sensitivity is also numerically displayed (43) and the selectedtrigger sensitivity is also graphically visualized (41).

Three fixed trigger levels are provided in the present case. However,they may also be adjusted using the symbols +/− (14 f 2, 14 f 3) inorder to thus fine-tune the trigger on a patient-specific basis. If thelevel “A” is selected for the auto level, the trigger is adaptivelyadjusted within predefined limit values which are also graphicallyvisualized.

FIG. 10 shows the graphical adjustment aid for at least one inspiratorypressure and one expiratory pressure. The position of the pressure tilebelow the graph illustrates which is the inspiratory pressure and whichis the expiratory pressure, and that PDIFF is the pressure swing (54).The color of the tiles represents:

-   -   green: currently selected parameter which can be adjusted using        a slider or +/− keys    -   gray: parameter which can alternatively be selected for        adjustment    -   black: informatively displayed parameter which is produced as a        consequence of the adjustments.

Alternatively, not only the value of the parameter to be currentlyadjusted could be displayed in the slider in one color, but rather thevalues of further parameters could be additionally displayed using amarking which differs in terms of shape and/or color. The operatingdevice for a breathing apparatus comprises a touch-sensitive graphicaldisplay (3, 13, 14, 15), which at least occasionally represents therange of values for a breathing parameter (14 a . . . 14 x), here theIPAP and/or EPAP and/or EEPAP pressure values (50), and numericallydisplays (51) at least individual values of the trigger sensitivity, amemory (21) for the pressure value, at least one data point associatedwith the range of values, at least one position (14 a . . . 14 x) on thetouch-sensitive graphical display which is associated with the datapoint using switching logic, switching logic (18) which, when theposition on the touch-sensitive graphical display which is associatedwith the data point using switching logic is touched, causes at leastone numerical value (52) associated with the data point and/or aconfirmation field for the numerical value to be displayed, andswitching logic (18) which, when the numerical value (52) or theconfirmation field is touched, applies this numerical value to theassociated respiratory gas parameter and writes this numerical value,with the associated respiratory gas parameter, to the memory (21).

The operating field is in the form of a number line or ruler and theentire range of values is visualized on the display (13) in the form ofa number line or bar and the visualized number line is also in the formof an operating field (14 f). The operating field is touch-sensitiveover the entire visualized adjustment range and the desired value can beselected by only touching the desired range. Finger pressure or touchingwithin the ruler is evaluated with respect to its position in such amanner that it is not necessary to strike precisely one of the numbers,but rather the finger pressure is assigned to the closest number. Thedetected value (52) is visualized in an additional field (14 f 1),

The detected value can be additionally adjusted using the symbols +/−(14 f 2, 14 f 3). Not only are individual pressure values preferablynumerically displayed (52), but the selected value is also numericallydisplayed and the selected pressure is also graphically visualized (53).However, the latter can also be adjusted using the symbols +/− (14 f 2,14 f 3). The resulting pressure swing is preferably also displayed as anumerical value (55) and graphically visualized (54) for information.

As an addition to FIG. 8 and in combination with the instantaneous rampgradient 1, 2 or 3 (31), the adjustment of further parameters logicallyconnected thereto is also informatively displayed according to FIG. 11.As a result, the user can usefully select the value to be currentlyadjusted without having to keep in mind all of the other parameters. Asa consequence of the instantaneous ramp gradient and the otherparameters, the currently valid ramp time in ms (35) is calculated andis likewise informatively displayed.

FIG. 12 shows the adjustment of the ratio of inspiratory time to thetotal breathing time in % (60). The selected breathing frequency (61) isadditionally displayed. As a consequence of the adjusted breathingfrequency and the adjusted ratio Ti/T, the inspiratory period Ti (62)and expiratory period Te (62) are calculated and informativelydisplayed.

The lower half illustrates an alternative embodiment in which theinspiratory period is adjusted, and the expiratory period and Ti/Tautomatically result therefrom in combination with the selectedbreathing frequency. The operating device for a breathing apparatuscomprises a touch-sensitive graphical display (3, 13, 14, 15), which atleast occasionally represents the range of values for a breathingparameter (14 a . . . 14 x), here the inspiration period (62), andnumerically displays (64) at least individual values, a memory (21) forthe inspiratory period, at least one data point associated with therange of values, at least one position (14 a . . . 14 x) on thetouch-sensitive graphical display which is associated with the datapoint using switching logic, switching logic (18) which, when theposition on the touch-sensitive graphical display which is associatedwith the data point using switching logic is touched, causes at leastone numerical value (65) associated with the data point and/or aconfirmation field for the numerical value to be displayed, andswitching logic (18) which, when the numerical value (65) or theconfirmation field is touched, applies this numerical value to theassociated respiratory gas parameter and writes this numerical value,with the associated respiratory gas parameter, to the memory (21).

The operating field is in the form of a number line or ruler and theentire range of values is visualized on the display (13) in the form ofa number line or bar and the visualized number line is also in the formof an operating field (14 f). The operating field is touch-sensitiveover the entire visualized adjustment range and the desired value can beselected by only touching the desired range.

Finger pressure or touching within the ruler is evaluated with respectto its position in such a manner that it is not necessary to strikeprecisely one of the numbers, but rather the finger pressure is assignedto the closest number. The detected value (52) is visualized in anadditional field (14 f 1). The detected value can be additionallyadjusted using the symbols +/− (14 f 2, 14 f 3). Not only are individualvalues preferably numerically displayed, but the selected value is alsonumerically displayed and the selected value is also graphicallyvisualized. However, the latter can also be adjusted using the symbols+/− (14 f 2, 14 f 3). The resulting exhalation time (63) is preferablyalso displayed as a numerical value (63) and/or graphically visualizedfor information.

FIG. 13 shows the described circular embodiment of the operatingelement. A dial which can be operated using a finger is simulated on atouch-sensitive display. A display element which is likewise circularand displays at least the currently set value—19 minutes in theexample—particularly preferably also the value limits or the range ofvalues—0 to 45 minutes in the example—is placed around the operatingfield. The display is effected as a number and additionally particularlypreferably by means of a colored and/or thicker marking (74) whichrepresents the instantaneous values in relation to the entire range ofvalues.

The operating device for a breathing apparatus comprises atouch-sensitive graphical display (3, 13, 14, 15), which at leastoccasionally represents the range of values for a breathing parameter(14 a . . . 14 x) and numerically displays (71) at least individualvalues, a memory (21) for at least one data point associated with therange of values, at least one position (14 a . . . 14 x) on thetouch-sensitive graphical display which is associated with the datapoint using switching logic, switching logic (18) which, when theposition on the touch-sensitive graphical display which is associatedwith the data point using switching logic is touched, causes at leastone numerical value (71) associated with the data point and/or aconfirmation field for the numerical value to be displayed, andswitching logic (18) which, when the numerical value (71) or theconfirmation field is touched, applies this numerical value to theassociated respiratory gas parameter and writes this numerical value,with the associated respiratory gas parameter, to the memory (21).

The operating field is in the form of a rotary knob or a dial (73) andthe entire range of values or a partial range of values is visualized onthe display (13) in the form of a numerical ring (72) and the visualizednumerical ring is also in the form of an operating field (14 f). Theoperating field is touch-sensitive over the entire visualized adjustmentrange and the desired value can be selected by only touching the desiredrange. Finger pressure or touching within the numerical ring isevaluated with respect to its position in such a manner that it is notnecessary to strike precisely one of the numbers, but rather the fingerpressure is assigned to the closest number.

Alternatively, swiping over the numerical ring is detected as anadjustment process and stopping of the swiping movement is detected as aselection. That value which is detected when the movement is stopped—thedetected value (71)—is visualized in an additional field (14 f 1). Thedetected value can be additionally adjusted using the symbols +/− (14 f2, 14 f 3). Not only are individual values preferably numericallydisplayed, but the selected value is also numerically displayed and theselected value is also graphically visualized. However, the latter canalso be adjusted using the symbols +/− (14 f 2, 14 f 3).

The parameter (75) to be currently adjusted is particularly preferablydisplayed with its name and/or an internationally comprehensible symbol(75) and/or its unit (75). In the example illustrated, the parametercould be the ramp time as a sleeping aid of a therapy apparatus, whichis displayed in minutes. Alternatively, therapy pressures or the powerlevels of a respiratory humidifier, inter alia, can be displayed andadjusted.

If the user carries out a rotational movement on the displayed dialusing a finger, preferably in the clockwise direction, the selectedvalue is increased, from 19 to 32 minutes in the example. A rotationalmovement in the opposite direction results in a reduction in theselected value. If the intended value is reached, it can be accepted andused by the apparatus. This is typically carried out either after expiryof a waiting time without further adjustment or after pressing aconfirmation key/confirmation area (76) which is indicated, for example,with “accept”, “ok”, “use”, a check symbol or the like. This isparticularly preferably situated in the center of the displayed dial.

FIG. 14 shows an alternative embodiment. In this case, the “dial”operating element and the circular display element are situated besideone another or below one another. This is a preferred embodiment if atouch-sensitive display element is not used, but rather only a graphicaldisplay element (80) having a separate mechanical rotary pushbutton(81). This embodiment provides an advantage since the mechanical rotarypushbutton (81) can preferably be used for fine adjustments owing to thehaptics or better operability. The graphical visualization of theadjustment process and/or of the selected value and/or of the availablerange of values, which is decoupled from the mechanical rotarypushbutton (81), provides the advantage that a larger and improveddisplay can be selected than could be provided by a scale beside themechanical rotary pushbutton (81).

In this case, a selected value is particularly preferably confirmed bypressing the rotary pushbutton (81).

Otherwise, the type of display and adjustment is comparable with theexemplary embodiment in FIG. 13, which is why the description withrespect to FIG. 13 can also be used for the example in FIG. 14.

According to the invention, a (start/stop) operating area (14 x) can beprovided on the touchscreen or a mechanical (start/stop) operatingelement (2) according to FIG. 15 can be provided, the actuation of whichcauses the operating and information system (3) to start or stop theventilation via the control unit.

The invention provides for the (start/stop) operating area (14 x) on thetouchscreen to have a different form depending on the situation; forexample, if the ventilation is not active but can be started, the(start/stop) operating area (14 x) on the touchscreen at least partiallyhas a green color, for example, or has a start symbol and additionallyhas an item of written information “start ventilation”, for example. Ifthe ventilation is active and can be stopped, the (start/stop) operatingarea (14 x) on the touchscreen at least partially has a red color or hasa stop symbol and additionally has an item of written information “stopventilation”, for example.

In this case, provision is made, for example, for the (start/stop)operating area (14 x) to otherwise appear unchanged always at the sameposition on the touchscreen and/or always in the same size.

If the (start/stop) operating area (14 x) on the touchscreen forstopping the ventilation “stop ventilation” is confirmed, instantaneoussettings for the ventilation, for example instantaneous pressure values,are stored by the control unit in a retrievable manner and are read outagain in response to actuation of the (start/stop) operating area (14 x)again—for starting the ventilation—and are activated for theventilation, in particular provided that no changes were made to theventilation settings while ventilation was stopped.

What is claimed is:
 1. An operating device for a breathing apparatus,wherein the device comprises a touch-sensitive graphical display whichat least occasionally represents a range of values for a ventilationparameter and numerically displays at least individual values, and amemory for ventilation parameter values, and further comprises at leastone data point associated with the range of values, at least oneposition on the touch-sensitive graphical display which is associatedwith the data point using switching logic, a switching logic which, whenthe position on the touch-sensitive graphical display which isassociated with the data point using switching logic is touched, causesat least one numerical value associated with the data point and/or aconfirmation field for a numerical value to be displayed, a switchinglogic which, when the numerical value or the confirmation field istouched, applies this numerical value to an associated respiratory gasparameter and writes this numerical value, together with the associatedrespiratory gas parameter, to the memory.
 2. The device of claim 1,wherein the ventilation parameter is the pressure or flow or volume orfrequency or IPAP or EPAP or PEEP or FiO2.
 3. The device of claim 1,wherein the operating field is in the form of a number line or bar andan entire range of values is visualized on the display in the form of anumber line or bar, the visualized number line being also in the form ofan operating field.
 4. The device of claim 1, wherein the operatingfield is touch-sensitive over an entire visualized adjustment range. 5.The device of claim 1, wherein a desired value can be selected by merelytouching a desired range.
 6. The device of claim 1, wherein a detectedvalue is visualized in an additional field.
 7. The device of claim 6,wherein the detected value is additionally available for fine adjustmentusing the symbols +/−.
 8. The device of claim 1, wherein the memorystores at least a value used and input last and a value used and inputchronologically before said value and the memory always outputs thechronologically most recent value first if an undo function is actuated.9. The device of claim 1, wherein at least one collection of ventilationparameters stored in the memory in a retrievable manner comprises atleast three preset parameters selected from pressure or flow or volumeor frequency or IPAP or EPAP or PEEP or FiO2, and a region in which acollection of ventilation parameters is graphically represented isprovided for this collection of ventilation parameters in a region ofthe touch-sensitive graphical display, and the device further comprisesat least one data point associated with the collection of ventilationparameters, at least one position on the touch-sensitive graphicaldisplay which is associated with the data point using switching logic,switching logic which, when the position on the touch-sensitivegraphical display which is associated with the data point usingswitching logic is touched, causes at least one collection ofventilation parameters associated with the data point and/or aconfirmation field for the collection of ventilation parameters to bedisplayed, a switching logic which, when the numerical value or thecollection of ventilation parameters is touched, uses this collection ofventilation parameters.
 10. The device of claim 1, wherein the devicefurther comprises a graphical adjustment aid for at least one rampgradient.
 11. The device of claim 1, wherein the device furthercomprises a graphical adjustment aid for trigger sensitivity isprovided.
 12. The device of claim 1, wherein at least one adjustmentelement is in the form of a dial.
 13. The device of claim 1, wherein atleast one circular display element is present.
 14. The device of claim1, wherein a rotary pushbutton is present.
 15. The device of claim 1,wherein a start/stop area is present.
 16. The device of claim 15,wherein the start/stop operating area is arranged in a region of thetouchscreen and/or can be generated in different forms by an apparatuscontroller.
 17. The device of claim 1, wherein individual values of aventilation parameter are numerically displayed and a selected value isalso numerically displayed and the selected ventilation parameter isgraphically visualized.
 18. The device of claim 1, wherein three fixedlevels are provided for the ventilation parameter and these levels canbe adjusted using the symbols +/− to thereby fine-tune the ventilationparameter on a patient-specific basis.
 19. The device of claim 1,wherein the device comprises a graphical display element instead of atouch-sensitive display element and the graphical display elementcomprises a separate mechanical operating element, adjustments madeusing the mechanical operating element being graphically visualized onthe graphical display element.
 20. The device of claim 19, wherein achange in values during an adjustment process using the mechanicaloperating element and/or a selected value and/or an available range ofvalues is visualized on the graphical display element.
 21. An operatingdevice for a breathing apparatus, wherein the device comprises: (a) agraphical display which at least occasionally represents a range ofvalues for a ventilation parameter and numerically displays at leastindividual values, and a memory for breathing parameter values, andfurther comprises (b) at least one data point associated with the rangeof values, at least one position on the graphical display which isassociated with the data point using switching logic, (c) a switchinglogic which, when a position of a mechanical operating element assignedto the data point using switching logic is actuated, (d) causes at leastone numerical value assigned to the data point and/or a confirmationfield for the numerical value to be displayed, (e) a switching logicwhich, when the position of the mechanical operating element assigned tothe data point using switching logic is actuated, applies this numericalvalue to an associated respiratory gas parameter and writes thisnumerical value, together with the associated respiratory gas parameter,to the memory.